We do digital delivery of files, stores and generated codes and our service handles tangible products as well. You can check our features page to see all the features we offer.
The way we are different from esellerate are that we do "resell" your products. You directly sell your products and accept payment from the buyer via PayPal or Google Checkout or Authorize.Net. So we don't pay you .. buyer pays you.
Google Checkout and PayPal charge their transaction fee, but we don't charge any percentage and don't have any transaction limit either. We just charge a flat monthly fee based on the number or products you add in E-junkie and the disk space you need for your files. It could be as low as $5/month.
There is a downside to this as well. Since you are accepting payment directly, you have to deal with sales tax, VAT and refunds.
Our service makes it easy for you to charge tax and vat and you can deal with refunds/charge backs from PayPal/Google interface. However, you still are liable to pay the taxes on your own.